Potential Difference
Science: KS3, topic 3.4.5
Potential Difference
Potential Difference is another name we give to voltage.
/high-voltage%20-%20Edited-min,w_800.jpg)
Voltage
- Potential difference is another name we give for voltage.
- You need a potential difference or voltage for current to flow in a circuit.
Providing potential difference
- The most common ways of providing a potential difference is by adding a cell or battery.
Measuring potential difference
- Potential difference is measured in Volts.
- The symbol we use is ‘V’.
- A voltmeter is the device we use to measure the potential difference.
Voltmeters in parallel
- Voltmeters are added to a circuit in parallel.
- Voltmeters measure the potential difference between two points.
Test yourself on Potential Difference
What device is used to measure voltage?
Which are true of potential difference?
What are the units of potential difference?
A circuit has a lamp and wires but no cell or battery connected. What happens to the current in the circuit?